Relay control has worked from the Old days of DOS and batch files.
You would think people would like to up date from the 1970's to future of pot automation.
Chicken shit worked back in the 1800's should work in 2000's and with old or new free range chicken shit, both have weeds.
Pinching you plants to get more nodes worked the same way back in the 1970's
Hydro buckets are still the same size, ppm and ph have not changed.
Just a relay to put this back to the top, and open up some ones thinking.